FORT LAUDERDALE, Florida (WABC) -- Roger Stone, a longtime adviser and confidant of President Donald Trump, pleaded not guilty Tuesday to felony charges in the Russia investigation after a publicity-filled few days spent slamming the probe as politically motivated.

The political operative and self-described dirty trickster faces charges that he lied to lawmakers, engaged in witness tampering and obstructed a congressional investigation into possible coordination between Russia and Trump's 2016 presidential campaign.

He was uncharacteristically quiet during Tuesday's brief court appearance, rising to his feet to say, "Yes, Your Honor," as U.S. Magistrate Judge Deborah Robinson asked if he would agree to the conditions of his release, including restricted travel.

Stone attorney Robert Buschel entered the plea on his client's behalf.

The voluble Stone, 66, held no press conference as he arrived and departed the courthouse amid dueling chants of "Lock Him Up" and "We Love Roger." He waved and smiled to the small crowd, some holding up glowing photos of him, and he largely ignored a group of protesters carrying signs reading "Dirty traitor." The Beatles' "Back in the U.S.S.R." blared from speakers outside the courthouse.

Although large crowds surrounded him as he was driven away in a black SUV, Stone was more subdued than during the circus-like atmosphere of his Friday court appearance, when he emerged in a blue polo shirt, flashed a Richard Nixon victory sign, predicted his vindication and vowed that he would not "bear false witness against the president, nor will I make up lies to ease the pressure on myself."